Glass tile, slab, or the like.



-urnninn STATES PATENT OFFICE.

CHARLES HERBERT THOMPSON, OF STOURBRIDGE, ENGLAND, ASSIGNOR OF ONEHALF TO MAW & COMPANY, LIMITED, OF JAOKFIELD, ENG- LAND.

GLASS TILE, SLAB, OR THE LIKE.

Specification of Letters Patent.

Patented Nov. 28, 1905.

Application filed April 4, 1905. Serial No. 253,878.

To aZZ whom it may concern:

Be it known that 1, CHARLES HERBERT THOMPSON, fellow of the Chemical Society,ana lytical chemist, of Amblecote, Stourbridge, in the county of Stafford, England, have invented certa'in new and useful Improvements in and Relating to Glass Tiles, Slabs, or the Like, of which the following is a specification.

This invention relates to glass tiles, slabs, or the like, and has for its object to provide such tiles with simple and efficient means for securing them to walls, ceilings, and the like.

A tile, slab, or the like of opal or other glass made in accordance with this invention is provided on one side with pieces of flint, broken glass,or the like, which may be termed keys and by which the said tiles may be firmly fixed with the aid of a coating or bed of ordinary Portland or other suitable cement to walls, ceilings, or the like or upon bricks of burnt clay or other material, thus providing it or them with a facing of glass. The face of the tile may be left plain or it may be suitably decorated, as desired, by any well -known process.

In carrying out this invention I employ any silicofluorid which after dehydration is insoluble in water, but by preference a silicofluorid of lime, aluminium, and sodium, and I find the following proportions to be suitable, thoughI do not limit myself to the exact figures: two parts of natural cryolite or double fluorid of sodium and aluminium, two parts of potters whiting or calcined dolomite, one part of fiuorid of sodium, one part of kaolin or china-clay, six parts of liquid silicate of sodium. These materials are first mixed and ground together and then applied as a coating of any desired thickness upon the rear side of the glass, tile, or slab with the aid of a brush or other suitable appliance or by dipping, as in glazing earthenware tiles. Pieces of hard material-such as bitsone, grain flint, chips of glass, bits of earthenware tiles, or a combination of these or like substances are then sprinkled upon the coating. This backing is then allowed to dry and is then gradually warmed in a stove or other suitable apparatus to about 17 O centigrade and then allowed to cool gradually.

When cold, the coating of silicofluorids will be found to have adhered very firmly to the glass, tile, or slaband to have become quite hard and insoluble in water. During the heating process 'the fluorids will have attacked or roughened the'glass tile underneath the coating and the granular pieces will be found to have adhered firmly to the coating, thus providing keys or projections. The tile or sheet, if desired, can be cut to any required size. To lay the tile, it is buttered with any suitable cement and fixed in the ordinary manner of tile fixing, causing the adherence to the Wall or other surface.

I am well aware of the fact that glass tiles v have been made by fusing granular material with a strata of glass, painters flux to a sheet of glass, and also by the use of silicates of zinc; but these are entirely outside and different from this invention.

What I claim, and desire to secure by Letters Patent, is

1. The improved tile comprising a slab, a coating on the back of the slab, of a silicofluorid, which is insoluble in water after dehydration and pieces of silicious material applied thereto without fusing the silicofiuorid, substantially as described.

2. The improved method of fixing pieces of silicious material to tiles consisting in the application, to the back of the tile of a solution of a silicofluorid which after dehydration is insoluble in water, and then sprinkling thereon the pieces lof silicious material, and then drying, and warming without fusing the silicofluorid, and then gradually cooling the tile, substantially as described. 4

3. The improved method of fixing pieces of silicious material to tiles consisting in the application, to the back of the tile, of a silicofluorid of lime, aluminium and sodium which after dehydrating is insoluble in water, and then sprinkling thereon the pieces of silicious material and then drying, Warming and gradually cooling the tile, substantially as described.

4. The improved method of fixing pieces of silicious material to tiles consisting in the application to the back of the tile, of a solution in liquid silicate of sodium of double fiuorid of sodium and aluminium, calcined dolomite, fluorid of sodium, and kaolin which after dehydration is insoluble in water and then sprinkling thereon the pieces of silicious Inaing a coating containing an unfused silicofluorid, and having applied thereto a plurality of keys fixed in place by said coating.

6. The method of fixing keys of granular material or the like to a tile or similar article, which consists in applying thereto a coating containing a silicofluorid, applying such material to said coating, heating such coating to a point below the fusing-point of such silicofluorid, and then cooling it.

7 An improved tile comprising a slab having a coating containing an unfused silicofiuorid, and having its surface roughened to aid said coating in adhering thereto, and having applied thereto a plurality of keys fixed in place by said coating. 7

Witnesses:

E. BARKER, SIDNEY GEO. WEBB. 

